diff --git a/config.nix b/config.nix
index 94f1fc8..e585612 100644
--- a/config.nix
+++ b/config.nix
@@ -85,6 +85,29 @@ in
         firefox = {
           enable = true;
           package = pkgs.firefox-esr;
+          policies = {
+            SupportMenu = {
+              Title = "Config";
+              URL = "https://git.hamburg.ccc.de/jopejoe1/c3terminal";
+            };
+            WebsiteFilter = {
+              Block = [
+                "<all_urls>"
+              ];
+              Exceptions = [
+                "https://c3nav.de"
+                "https://*.c3nav.de"
+              ];
+            };
+            Preferences = {
+              "browser.ssb.enabled" = lock true;
+              #"ui.osk.detected_physical_keyboard" = lock false;
+              #"browser.gesture.pinch.in" = lock false;
+              #"browser.gesture.pinch.out" = lock false;
+              "zoom.maxPercent" = lock 100;
+              "zoom.minPercent" = lock 100;
+            };
+          };
           profiles = {
             default = {
               id = 0;